Celebration of Exhibit Opening “DinoTracks.” Travel back in time using fossils as clues for learning about New England dinosaurs. The interactive exhibit invites visitors to walk on prehistoric footprints, hear and feel dinosaur footsteps, and more. Opening celebration Jan. 19 and 20. Free with museum admission. EcoTarium members may bring up to four guests for this free weekend. On Super-Sauras Saturdays, participants will size themselves up to a dinosaur in these weekly interactive science activities, 2:30 p.m. through Feb. 16. Free with museum admission. 10 a.m.-5 p.m. Tuesdays through Saturdays; 10 a.m.-5 p.m. Sundays. $14; $8, children 2 to 18; $10, seniors and students with ID. EcoTarium, 222 Harrington Way, Worcester. (508) 929-2700. www.ecotarium.org.

Hymn Sing 7 p.m. Jan. 19. One Way Café, First Congregational Church, 144 North Main St., North Brookfield.

Charlton
Increasing its fixed-route service in 2013 is one of the core strategies of the Worcester Regional Transit Authority (WRTA). Beginning on Monday, Jan. 28, 2013, the WRTA will provide service to Southbridge and one stop in Charlton.

WRTA Meeting to obtain public comments on new service, 10 a.m. Jan. 19. Charlton Town Hall, 37 Main St., Charlton.

Eyes on Owls with Mark and Marcia Wilson. See all shapes and sizes of owls, learn how to spot one in the wild, and hooting lesson, 1 p.m. Jan. 19. $12; seniors and students with ID, $10; children 5-13, $5; children 4 and younger, free. Fruitlands Museum, 102 Prospect Hill Road, Harvard. (978) 456-3924, ext. 292 or www.fruitlands.org.